The site, by default, shows a blanket as an HTML table of nested background colors. Browsers don't print background colors by default, so users were like, "Frown."
Took me plenty long enough, calendar-wise, but now that's fixed. Technically speaking, generating an image is easy, and storing it is cheap.
The Python ...
(Oh, and Mac will be supported once Adobe releases Mavericks support for desktop Flash Player and AIR.)
Ossuary will cost 5 USD, with the option to pay more.